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Jul 21st, 2025 | | | | Joined: Jan 2023 Posts: 13 'Bolter | | 'Bolter Joined: Jan 2023 Posts: 13 | (note to site moderator; think I in the right forum? Gen. truck talk?) carb question for a stock 1953 chev 3800 model B carb, 216 eng.
Hi guys,
I'm rebuilding my carb and have a vac passage question.
1. I see two vac passages in the float bowl:
a) at the bottom of the pump discharge port.
b) at the top of the port, where the guide spring and ball go.
Where do the passages end up, so I can blow them out? I dipped carb and blew out all other passages. This new dip I bought is mild. Stuff I used before was in a 5 gal pail and caustic as all get out. and don't breathe or touch, it was way hard on the skin.
Surprise Department as an fyi. In the bowl cover assembly fuel inlet fitting, on the female side, I found a helicoil and much teflon tape. No fuel filter parts found. Slop job, threads look ok. Got out the tweezers and mag. glass. Cleaned out lots of tape shards, and dipped it. Put the fitting nut in finger tight, feels good and am thinking all will be good when installed, oh yeah. If leaking, I'll go to plan B.
Thanks for the help you guys, somerust
Jim D.
1953 chev 3800
bicycles 'n junk
mental fog
| | | | | Joined: Oct 2021 Posts: 5,684 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 5,684 | If Plan B is to buy a Carter YF, I'd change that to Plan A.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1956 Cadillac Sixty Special Fleetwood (The Godfather) | 1966 Oldsmobile Toronado (The Purple Knif) | 1966 Ford Mustang (Little Red) | 1964 Ford Galaxie 500 coupe | 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Aug 2017 Posts: 566 'Bolter | | 'Bolter Joined: Aug 2017 Posts: 566 | A
B
C
Always buy Carter!
Best change I did from Rochester B to Carter YF966s.
Todd
Listen to Otto
Last edited by Shaffer's1950; 08/05/2023 3:05 AM.
1950 Chevy 3100
| | | | | Joined: Sep 2009 Posts: 4,392 Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT | | Gearhead, Stovebolt Tech and Parts Tracker, Mod for Swap Meet and GTT Joined: Sep 2009 Posts: 4,392 | somerust, I have moved your question to the Engine Shop as that is the better forum for your question. Am sure other fellow Bolters with knowledge of the passages in the float bowl you asked about will come back and offer the details you seek to answer your question. Good luck on resolving your carb issues.  Dan
~ Dan 1951 Chevy 3 window 3100Follow this story in the DITY Gallery"My Grandpa Carl's Truck and How it Became Mine"1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
| | | | | Joined: Jul 2000 Posts: 2,115 Insomniac | | Insomniac Joined: Jul 2000 Posts: 2,115 | Hopefully this will help answer your question about passages: http://chevy.oldcarmanualproject.com/Rochester/BBC03.htmTeflon tape is for household plumbing - not for fuel systems.
Gord 🇨🇦
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1954 1/2 ton 235 4 speed
| | | | | Joined: Jan 2023 Posts: 13 'Bolter | | 'Bolter Joined: Jan 2023 Posts: 13 |
Jim D.
1953 chev 3800
bicycles 'n junk
mental fog
| | | | | Joined: Jan 2023 Posts: 13 'Bolter | | 'Bolter Joined: Jan 2023 Posts: 13 | yup good, that is the detail i need, thx again,
Jim D.
1953 chev 3800
bicycles 'n junk
mental fog
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